Springer Proceedings in Mathematics & Statistics | 2021
A Generalizability Study of Teach, a Classroom Observation Tool
Abstract
The use of classroom observation tools has grown in developing countries due to the consistent positive relationship between teaching quality and students’ learning outcomes. In this study we present results using the Generalizability Theory model for Teach, a classroom observation tool that has been used worldwide to measure the quality of interactions between teachers and students in the classroom. Data from four countries across different world regions was used to analyze to what extent Teach scores are impacted by raters, teachers, and items. Results across countries consistently showed a pattern in which most of the score variance is explained by the items and teachers, and to a lower extent by the raters. Results here obtained are similar to those reported for other classroom observation tools. Directions and lines of future psychometric research for Teach and other classroom observation tools are discussed.